Aro-tek has (had?) them. the link is from Brownells
from
http://www.ballisticreview.com/glockfaq.html
FACTORY NIGHT SIGHTS
Q. Night sights must be radioactive to emit light. Is it harmful to a person's sight or if it falls off and is picked up and placed in the mouth by a child? Also, do they come in other colors, ie: orange, red etc..? It must also be a restricted substance too?. How do they get around that?
A. "Tritium produces low-energy beta radiation that travels less than an inch through air and cannot pass through barriers such as paper or skin cells. Tritium does not pose an external radiation exposure threat to humans. Tritium enters the body the same way as water: through our mouth (by ingestion) through the air we breathe (by inhalation) through our skin (by absorption). When tritium is taken into the body, it dilutes evenly throughout all body fluids. A person eliminates through excretion or perspiration every 10 - 15 days one-half of any tritium in the body. If a person drank two liters a day of water with tritium at the EPA standard of 20,000 picoCuries (0.02 microCuries), the dose accumulated in one year would be 1 millirem. This is well below the average background radiation dose of 300 millirem per year received on Long Island." And, yes, Tritium sights are available in other colors. My night sights have a green front dot and a very dim red rear dots.
STANDARD NIGHT SIGHTS FOR GLOCKS
Q. I thought Trijicons were factory standard night sights for Glocks?
A. Both Meprolights and Trijicons are standard. You can specify or take what you get. MNS on your plastic box indicates Mepros and, voila, TNS indicates Trijicons.
UPDATE: Meprolite night sights are no longer used by the factory on Glock pistols...
TRITIUM NIGHT SIGHTS
Q. I have been told by a certified Glock armorer in L.A. that he is installing new factory filled tritium night sights with 15-year warranty and these are neither Trijicons nor Meprolights.
A. Glock did acquire the Trilux company and since February 1999 doesn't provide Trijicons or Meprolights with their guns, but only their own night sights factory filled by Trilox. Evidently Glock got tired of the flood of Trijicons and Meprolights being returned for warranty repairs to the factory 6 months after purchase. The new Glock sights are closer to Mepros than the Trijicons in size. UPDATE: Glock no longer owns Trylux.
